BoP Lab / Buttonwillow Raceway Park
No map published for Cal Club 2021.
This track has been raced on 2 configurations (The Circuit, 2.57 mi; 3.02 mi). Laps on different configurations are not comparable, so only events on the 2.57 mile layout are shown; switch above to see the others.
BSpc has no laps in the events chosen. It ran at Cal Club 2021: add that event.
| Pos | Car | Driver | Class | # | Lap | Theoretical | Qual | Race | 5-lap stint | Consistency | Trap | S1 | S2 | S3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Elan DP02/Mazda | Jim Devenport | P | 23, 28 | 1:32.576 A-P | 1:32.284 | 1:32.872 B-Q2 | 1:33.972 B-R2 | 1:35.195 B-R1 | +1.742 B-R1 | 171.9 A-P | 25.461 B-Q2 | 26.606 A-P | 40.217 A-P |
| 2 | Dauntless Stohr | Johnnie Crean | P | 3, 135 | 1:36.516 B-Q1 | 1:36.516 | 1:36.516 B-Q1 | 1:39.209 B-R1 | 1:40.027 B-R1 | +1.943 B-R1 | 157.4 B-P | 25.956 B-Q1 | 28.143 B-Q1 | 42.417 B-Q1 |
| 3 | Dauntless-Stohr P07d | John Manfroy | P | 08 | 1:37.287 A-R2 | 1:36.339 | 1:41.818 A-Q1 | 1:37.287 A-R2 | 1:39.027 A-R2 | +2.902 A-R2 | 160.4 A-R2 | 26.696 A-R2 | 27.257 A-R2 | 42.386 A-R2 |
| 4 | Stohr WF1 | Kevin Mitz | P | 13 | 1:38.716 A-Q2 | 1:38.667 | 1:38.716 A-Q2 | 1:39.638 A-R2 | 1:40.087 A-R2 | +0.641 A-R2 | 155.4 A-Q1 | 26.934 A-Q2 | 28.397 A-Q2 | 43.336 A-Q2 |
| 5 | Penton Norma M20FC | Joseph Moran | P | 7 | 1:39.296 A-Q2 | 1:38.868 | 1:39.296 A-Q2 | 1:40.832 A-R1 | 1:42.328 A-R1 | +3.544 A-R1 | 149.0 A-Q2 | 27.106 B-Q1 | 28.111 A-Q1 | 43.651 A-Q1 |
One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.
Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.
| Car | Class | Drivers | Lap | Qual | Race | Trap | S1 | S2 | S3 |
|---|---|---|---|---|---|---|---|---|---|
| Elan DP02/Mazda | P | 1 | 1:32.576Jim Devenport | 1:32.872Jim Devenport | 1:33.972Jim Devenport | 171.9Jim Devenport | 25.461Jim Devenport | 26.606Jim Devenport | 40.217Jim Devenport |
| Dauntless Stohr | P | 2 | 1:36.516Johnnie Crean | 1:36.516Johnnie Crean | 1:37.287John Manfroy | 160.4John Manfroy | 25.956Johnnie Crean | 27.257John Manfroy | 42.386John Manfroy |
| Dauntless Stohr | P | 1 | 1:36.516Johnnie Crean | 1:36.516Johnnie Crean | 1:39.209Johnnie Crean | 157.4Johnnie Crean | 25.956Johnnie Crean | 28.143Johnnie Crean | 42.417Johnnie Crean |
| Dauntless-Stohr P07d | P | 1 | 1:37.287John Manfroy | 1:41.818John Manfroy | 1:37.287John Manfroy | 160.4John Manfroy | 26.696John Manfroy | 27.257John Manfroy | 42.386John Manfroy |
| Stohr WF1 | P | 1 | 1:38.716Kevin Mitz | 1:38.716Kevin Mitz | 1:39.638Kevin Mitz | 155.4Kevin Mitz | 26.934Kevin Mitz | 28.397Kevin Mitz | 43.336Kevin Mitz |
| Penton Norma M20FC | P | 1 | 1:39.296Joseph Moran | 1:39.296Joseph Moran | 1:40.832Joseph Moran | 149.0Joseph Moran | 27.106Joseph Moran | 28.111Joseph Moran | 43.651Joseph Moran |
The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.
#37606 from Club Racing Board · Rule change · TB 25-02 (2025-02 Fastrack)
In Prototype Engine Table, Spec Line B, change the notes as follows:
"Staudacher cars may run 950 lb min. wt. minimum weight with 38.5mm flat plate intake restrictor."
In Prototype Engine Table, Spec Line D, change the notes as follows:
"No restrictor required at 1150 lb min. wt. minimum weight."
#37653 from Club Racing Board · Rule change · TB 25-02 (2025-02 Fastrack)
In Categories and Classes, GCR section 9.1, change as follows:
"9.1.8. SPORTS RACING CATEGORY CLASSES
A Sports Racing (ASR) Regional Class
Prototype 1 (P1)"
In Homologation Requirements, GCR section 9.2.2, change as follows:
"All Formula, Sports Racing, and P1, and P2 cars must be constructed in strict accordance with the rules and regulations
contained in the current GCR unless specifically excepted."
In Non-Metallic Wheel/Chassis Construction, GCR section 9.3.37, change as follows:
"Non-metallic wheel construction is prohibited. Non-metallic chassis construction is prohibited, except in ASR, P1, FS and FA."
In Appendix B, GCR section 1.4.2.G, change as follows:
"It is preferable not to combine GT1, AS, T1, T2, T3, and STU with P1, P2, SRF, FP, HP, or GTL."
In Appendix C, GCR section 2.6.G, change as follows:
"A 14 or 15 year-old must complete his first SCCA driver school in a car not classed in GT1, GT2, FA, FB, F S, ITR, ASR, P1, P2, or
T1."
In Appendix E, section 1, change as follows:
"Depending on the length and banking of the oval course being used, it is recommended that Regions consider restricting the
faster classes (GT1, FA, and P 1) from competition at oval track events."
In Sports Racing Category, GCR section 9.1.8.1, change as follows:
"The SCCA Sports Racing Category shall be for automobiles which are designed and constructed for road racing competition,
offering provisions for a driver and passenger, or a driver alone (single-seater). They shall conform to the following
requirements. Sports Racers Cars except SRF & SRF3 homologated prior to 1-1-2014 are eligible to compete as P1 or P2 as long
as they meet applicable class rules,; no re-homologation is required."
"Single seat Formula car chassis (Ex.: FA, FC, FF, FV) fitted with enclosed bodies (as specified in these rules) may run in a Sports
Racing/Prototype Class (ASR, P 1, P2) provided they comply with the requirements of the Classification Specification and GCR
Section 9."
In Sports Racing Category, GCR section 9.1.8.2, change as follows:
"In an effort to control shock/damper technology and cost to a level reasonable for Road Racing, in ASR, P1, and P2, any fluid
dampers are allowed with the following restrictions:"
#38150 from Club Racing Board · Rule change · TB 25-05 (2025-05 Fastrack)
In P Engine Table, Spec Line D notes, add the following:
"No restrictor required at 1150 lbs. minimum weight."
In P Engine Table, Spec Line G notes, add the following:
"Group CN non-composite chassis with Honda K20A-FD2 may use unrestricted individual throttle bodies at 1500 lbs. minimum
weight."
In P Table 1, Beasley B2 spec line notes, add the following:
"Engine must be Mazda 12A rotary with 40.5mm venturi. Car must comply with all other Prototype requirements."
In P Table 1, P2 cars built to 2000cc auto-based specification spec line notes, add the following:
"Car must comply with all other P2 rules applicable to cars using stock production-based four-cylinder automotive engines.
Note: Competitors are also free to modify their cars to comply with the general Prototype rules and Engine Table Spec Line H
instead."
#38929 from Club Racing Board · Rule change · TB 25-09 (2025-09 Fastrack)
Effective 8/1/25 in Prototype Engine Table, Spec Line A, change the restrictor as follows:
"40mm 38mm Restricted Venturi Size"
#38856 from Jason Vinkemulder · Rule change · TB 25-09 (2025-09 Fastrack)
Effective 9/1/25 in Prototype Engine Table, Spec Line K, change the restrictor as follows:
"40mm SIR with fuel injection or 41.5mm venturi with carburetor"
#38916 from Club Racing Board · Rule change · TB 25-09 (2025-09 Fastrack)
Effective 9/1/25 in Prototype Table 1 (Spec Line Cars), add the following:
#38943 from Club Racing Board · Rule change · TB 25-09 (2025-09 Fastrack)
Effective 9/1/25, in Prototype, GCR section 9.1.8.B.K, change as follows:
"P2 cars may compete in either the Prototype class or the P2 class but must participate in the Prototype class to the extentnecessary to qualify for an invitation to the Runoffs in Prototype. P2 cars may be modified to comply with the general Prototype
rules and Prototype Engine Table or may continue to run in P2 specification in the Prototype class as permitted in Table 1 below."
Table 1 (Spec Line Cars)
A specification table follows in the original; it is not shown here.
#39476 from Jeffrey Lederman · Rule change · TB 26-01 (2026-01 Fastrack)
In Prototype, GCR section 9.1.8.B.F.2, change as follows:
"Brake calipers may be ferrous or aluminum alloy. Effective 1/1/2026, carbon-carbon and carbon-ceramic brake rotors areprohibited and rotors must be ferrous. Brake rotor material is unrestricted."
What the rules allowed changed as listed; this does not say what any particular car ran.